Machine for polishing rings.



No. 847,445. PATENTED MAR. 19,1907.

H. A. STBARNS, JR. 4

MACHINE FOR POLISHING RINGS. APPLICATION FILED JANA. 1901.

2 SHEETS-SHEET 1.

No. 847,445. PATENTED MAR. 19, 1907. H. A. STEARNS, JR-

APPLICATION FILED JAN. 4.1907.

2 mantra-51mm a.

um I Y ,4 kg illlllllllW witnesses: 1

Inventor.

' UNITED srarns PATENT oFrio-E.

HENRY A. 'STEARNS, 111., OF FIILFORD, MASSACHUSETTS.

,m'Aci-ems Foe ousi me. RINGS.

Specification of Letters Patent.

katentea March 19, 1907.

. Application filed January 4, 1907. Serial No. 360,767.

and useful Improvements in Machines for Polishing Rings, of which thefollowing is a specification.

This invention relates to a machine for pol ishing the inner surfaces ofrings, and isparticularly adapted for polishing the inner surfaces ofspinning and twister rin s, such as are used connection with text'i emachinihe object of the invention. is to provide a simple, compact, andeasily-operated machine which is adapted to hold a variety of sizes andwidths of rings which are to be polished and which is also adapted to beeasily changed, so that different-sized rings may be inserted in themachine to be polished.

The object of the invention is, further, to rovide a machine which willdo the work ereinbefore set forth economically and quickly.

The invention consists in the combination and arrangement of parts setforth in the following specification and particularly pointed out in theclaims thereof.

Referring to the drawings, Figure 1 is a front elevation of my improvedmachine for polishing rings, broken to save space. Fig. 2 is a verticallongitudinal section, partly in elevation, of the lower portion; of themachine, comprising that part of the machine which performs thepolishing operation. Fig. 3 is a sectional elevation taken on line it 3of Fig. 2 looking toward the left in said re. 1153a in adjusting themachine to the size of rings which are to be polished therein.

L' e numerals refer to like parts throughout the several views of thedrawings.

In the drawings, 5 5 are the frame-standards, which may be fastened to abench or to a table. 6 is a counter-shaft supported in bearings in saidside frames and having fastenedat its opposite ends pulleys, 7 and 8.

" The shaft 6 may be driven either by a pulley or by hand. The pulley 7is connected by a cross-belt 9 toapulley 10, fast to a drivingshaft 11,which is journaled to rotate in a bearing providedin the side frame 5and ter- I minates in a pointed end 12 atthe inner side .of the frame.The pulley 8 is connected by a Fig. 4 is a side elevation of'aform Istraight belt 13 to a pulley 14, fast to a drive of said frame 5 in apointed end 16. A

mg-shaft 15, which terminates at the inner polisher-shaft 17 issupported upon said The rings 20 20 are of the form used "for spinningand twister rings and have flanges 21 21,, projecting inwardlytherefrom, as well as flanges 22 22, projectin outwardly therefrom. Therin s 20 are he (1 in position to be polished by a holder 23, whichconsists of two end plates 24 25, joined together and adjustable towardeach other by means of bolts 26' 26. Said bolts are screw-threaded andprovided with nuts 27 28 at the opposite ends thereof, whereby the rings20 may be clamped between said end plates. Said end plates arepreferably provided upon their inner faces with steel disks 29, fastenedthereto for the purpose of resisting wear.

In order to adjust the rings 20 and to hold them concentric with theshaft 17, clam blocks 30 30 are provided, preferably ma e of wood, andare held against the peripheries of -said rings by means ofadjusting-screws 31 31, the inner ends of which bear against or projectinto said clamp-blocks, said adjusting screws having screwthreadedengagement with annular plates 32 32, which extend around said ringsbetween the end plates 24 and 25 and are supported by the bolts 26 26.Said adjustingscrews are locked to the annular plates 32 32 by means oflock-nuts 33.33. I Q

The holder 23 as a whole is prevented from moving longitudinally u onthe shaft 17 at one end thereof by a col ar 34, which is fastened to theshaft 17 and bears against the outer face of the end plate 24. The endplate 25has holes provided therein to receive a plurality of pins 35,fast to a sleeve 36, which in turn is rigidly fastened to the shaft 11.The shaft 17 is rotated by the drivingshaft 15, said shaft 17 having adog 37 fast 38 38 to receive pins 39 39, fast to a plate 40, .which inturn is fastened rigidly to the driving-shaft s j The driving-shaft 15is rendered movable longitudinally thereof in the end frame 5 byremoving the cotter-pin 41 from the collar 42 and from said shaft 15.

A bushing 43 is fastened to theend plate 24 and" projects therethroughinto the interior of" the holder 23 and between the felt 18 and theshaft 17. A similar bushing 44 is provided at the left-hand end of theholder 23, Fig. 2, saidbushing 44 being fastened to the end plate 25.

It will be noted that the clamp-blocks 30 are made shorter than the sumof the widths of illustration only nine rings are'shown in the drawing;but in machines as practically used fifty rings can be used on oneholder to advantage.

-In polishing the rings the space not 00- cupied by the polishing-pad inthe interior of said rings is filled with emery 47, preferably ofdifferent-sized grains, the most desirable sizes having been found to.be Nos. 10v

and 18. 3

.To remove the holder for the purpose of taking out rings which havebeen polished and reloading the same, the cotter-pin 41 is removed, andthe shaft 15, together with the plate and the pins 39, are movedtowardrings from the pressure of the blocks, and I 1 toward the rightsufficient distance to rethe right' Fig'. 2, releasing the dog 37, sothat -nd the shaft 17 together with the attach'ed thereto, may be rnovedmove the end platej25 from the pins 35, the left-hand end of theshaft 17at the same time being removed from {connection with the pointed end 12of the'shaft 11. Having thus removed the holderfrom the machine, the dog*37 is removed from the shaft 17. The collar 34 is also remoyed fromsaid-shaft 17, and the nuts 28 2828 are-removed from their respectivebolts 26 26 26, so that the end plate 24 can be removed from said boltsand from the shaft 17 The emery is then emptied out from the interior ofthe rings 20 20, theshaft 17 removed, and the set-screws 31, which bearagainst o'neof the clamp-' blocks. 30, are loosened. This will freethethey can then be removed from the interior of the holder.

In reloading the holder a new set of rings are placed in said holderinside the clampblocKs 30 30 30. The block 30 which has previouslybeenloosened is tightened against the rings by tightening the set-screws 3131 '31, the shaft 17 is inserted in its proper place, and the space notoccupied by the pad 18 in the inside of the rings is filled with emery47. The outside plate 24 is then placed. in position and screwed up bymeans of the nuts 28 28 to clamp the rings 20 in place, the collar 34 isthen placed in position and tightened by its set-screw, and the dog 37is securely fastened to the shaft, and the holder is then ready to beplaced in the machine, which is done by slipping the end plate 25 uponthe pins 35 35 and then mov ing the shaft 15 until its pointed end abutsagainst the adjacent end of the shaftv 17, while the pins 39 39 enterthe slots 38 38 in the dog 37. The collar 42 can be secured by slippingthe cotter-pin 41-through the hole provided therefor in the shaft 15,thus placmg the machine in readiness to polish a new set of rings.

' To enable the operator to readily adjust the machine to sets of ringsof varying diameters, a cylindrical form 45 is provided for each set ofrings of different diameters. Said form has a in 46 projecting from oneendthereof, whicli is of the same diameter as the shaft 17 and isinserted in the hole provided therefor in the end late 25. Theclamp-blocks 30 are then adjusted to bear against the periphery of theform 45 by adjusting the screws 31 31 sufficiently so to do. The form isthen removed by loosening the set-screws 31 31 for one clamp-block, andthe holder is then inreadiness for the rings of the diameter of the form45 to be inserted in the holder.

The general operation of the device hereinbefore specifically describedis as follows: Assuming that the shaft 6 is rotated bysuitable means,either by hand or by a pulley attached thereto, it will be seen that theshafts 11 and 15 will rotate in opposite directions, the pulleys 7 and10 being of suitable si'ze relatively to the pulleys 8 and 14 to causethe shaft 11 to rotate more rapidly than the shaft 15, the comparativesizes of pulleys preferable, though not essential, to the practicaloperation of the machine. As the shafts 11 and 15 rotate in oppositedirections, it will be seen that the shaft 17, with its pol- 'ishing-padattached thereto, and the holder I 23 will rotate in oppositedirections, so that i the rings 20 will rotate in the direction in whichthe holder 23 rotates, said rings being clamped thereto, while the shaft17 and its polishing-pad will rotate in the opposite d1- rection to thatin which said holder is rotated, thus greatly increasing the relative ispeed with which the pad passes over the 1nner surfaces of the'rings 2O20. After the shown in the drawings having been found machine has beenrun a short time the rings T screws on said annular plates, andclampw1ll have become pohshed upon their inner surfaces, and the samemay be removed and a manner hereinbefore described. The polishing actiontakes place, as will be readily understood, by the rubbing of the emery47 against the inner surfaces of the rings by the felt pad 18.

l. claim, and desire by Letters Patent to secure, is

I. In a machine for polishing rings, a holder for said rings, mechanismto rotate said holder, a shaft, and a polishingepad fast to saidshaft'and eccentric thereto, said pad located inside said rings andadapted to bear against the inner faces thereof.

2. In a machine for polishing rings, a holder for said rings, a shaft, apolishing-pad blocks adapted to bear against the peripheries of saidrings and located between said new rings placed 1n position to bepohshed 1n annular plates and rings, against which blocks, the innerends of said screws bear.

6. In a machine for polishing rings, a holder for said rings comprisingtwo end plates, bolts connecting, said end plates together, annularplates extending around said Having thus described my,mvent1on, what 1fast to said shaft and eccentric. thereto, said bear against the innerfaces thereof, and

mechanism to rotate said holder and shaft in pad located inside saidrings and adapted to to said shaft, said pad located inside said ringsand adapted to bear against and ex- I tend partly around the inner facesof said rings.

4. In a machine for pohshmg rmgs, two

end, a polisher-shaft resting at the opposite ends thereof upon saidointed ends, means to lock said pohsher-sha t to one of said (lIlV-ing-shafts, a polishing-pad fast to said polisher-shaft, a holder forsaid rings, and means to lock sald holder to the other of saiddrivmg-shafts.

rings and supported on said bolts, adjustingscrews on said annularplates, and clampblocks adapted to bear against the peripheries of saidrings and located between said annular plates and rings, against whichblocks the inner ends of said screws bear; in combination with apolisher-shaft extending through said plates and rotatabletherein. and apolishing-pad fast to said polishershaft and adapted to bear against theinner faces of said rings.

7. In a machine for polishingrings, a holder for said rings comprisingtwo end plates, bolts connecting said end plates together, annularplates extending around said rings and supported on said bolts, adjustingscrews on said annular plates, and clampthrough said end platesand rotatable therein, a polishing-pad fast to said polisher-shaftdrivmg-shafts, each terminating in a pointed l 5. In a machine forpolishing rings, a

holder for said rings comprising two end plates, bolts connecting saidend plates together, annular plates extending around said rings andsupported on said bolts, adjusting- HENRY A. STEARNS, JR;

Witnesses 2 CHAR-LES S. GooDING, LOUIS A. JoNEs

